Attached please find the qvw and qvd to illustrate my problem while attempting to load records with the most recent time stamp. I ended up applying a workaround. I appreciate it if you can provide a proper solution.
The ' ' around the variable doesn't appear to be the bug. The problem I think is that incidentally TimeStamp and vMostRecent appear to have identical numeric value. That's why I think my workaround works.